Hi George,

> Comparing time with Rhino SKP export for the same model,
> which is the difference?

The Rhino SKP export is definitely much faster. However, there are a lot of problems with the resulting data - it looks like the Rhino exporter does not fuse together faces so for example a box comes in as 6 disconnected pieces (and actually each face piece is made up of multiple polygons instead of one) and push/pull on those faces does not behave like a normal solid box made natively in SketchUp would.

I think it's probably better to have the "high integrity" but slower exporter instead of one that is fast but has bad structure to it.

But I'll take a bit more of a look at it today though, there is a possibility I could do more of the joining/fusing work in my own code instead of relying on the SketchUp library code to do it.

- Michael